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bionlinequiz 11A

True/False
Indicate whether the statement is true or false.
 

 1. 

Segmentation is first observed in mollusks.
 

 2. 

In earthworms, food molecules are extracted from soil and absorbed into the bloodstream through the intestinal wall.
 

 3. 

Earthworms have parapodia that aid in movement.
 

 4. 

Earthworms grind the soil in the gizzard
 

 5. 

Seastars are examples of gastropods
 

 6. 

An oyster is a type of bivalve.
 

 7. 

All mollusks except bivalves have radula.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 8. 

A characteristic structure found in many mollusks is the radula, which is involved in
a.
jet propulsion.
c.
eating.
b.
opening and closing of the shells.
d.
reproduction.
 

 9. 

Which of the following has a true coelom?
a.
flatworm
c.
rotifer
b.
roundworm
d.
mollusk
 
 
nar001-1.jpg
 

 10. 

Refer to the illustration above. The organism shown is a
a.
bivalve.
c.
snail.
b.
cephalopod
d.
gastropod.
 



 
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